While it is normal for the top card in a Crossfire situation to run several degrees warmer due to less airflow, it is not normal for a 7870 to run at 80°C under normal gaming circumstances. Improve your case airflow.

While it is normal for the top card in a Crossfire situation to run several degrees warmer due to less airflow, it is not normal for a 7870 to run at 80°C under normal gaming circumstances. Improve your case airflow.

If your 1st adapter is exactly on top of the other (pcie slots too near), then no matter the custom fan speed you use, it will always overheat because it sucks hot air directly from the second adapter during load.

If there is enough space between the two cards inside your pc case, and you have a good internal case airflow, then 90°+ C is too hot for the 1st and 80°+ C is too hot for the 2nd as well.

Leave automatic fan for casual pc use only.

Use msi afterburner to make a custom fan speed of 50-70% rpm, before launching a demanding/ stressful game, so as to maintain a temperature mark of up to ~78° C. Adjust fan speed accordingly and/ or case airflow.

Originally posted by: backFireX64 If your 1st adapter is exactly on top of the other (pcie slots too near), then no matter the custom fan speed you use, it will always overheat because it sucks hot air directly from the second adapter during load.

If there is enough space between the two cards inside your pc case, and you have a good internal case airflow, then 90°+ C is too hot for the 1st and 80°+ C is too hot for the 2nd as well.

Leave automatic fan for casual pc use only.

Use msi afterburner to make a custom fan speed of 50-70% rpm, before launching a demanding/ stressful game, so as to maintain a temperature mark of up to ~78° C. Adjust fan speed accordingly and/ or case airflow.